50 solar settlements in North Rhine-Westphalia
50 solar settlements in North Rhine-Westphalia (official, full title: Building with the sun - 50 solar settlements in North Rhine-Westphalia ) is a project of the state of North Rhine-Westphalia with the aim of promoting resource conservation - especially in the form of solar energy - in urban planning .
The call to the state's municipalities to build 50 solar settlements was launched in the spring of 1997 via the EnergyAgency.NRW and several state ministries. In 2009 there were 53 projects that were managed as solar settlements. Of these, 29 settlements with around 2800 residential units in North Rhine-Westphalia were completed, 18 were under construction and another 6 were in the planning stage.
Project
European Energy Award
The European Energy Award (eea) is a quality management system and certification process with subsequent award that was developed at European level. Over 580 municipalities in 10 countries are now participating in the eea. The standardized evaluation system enables performance comparisons between the eea municipalities. If a municipality has taken the necessary steps within the framework of the eea program and has achieved the specified standards, it can apply for certification by an external auditor.
implementation
The lead project of EnergieAgentur.NRW is intended to show the possibilities of using solar energy for the heat and power supply of buildings at settlement level and to give solar construction a further impetus. The focus of the project lies in the energetic optimization of the individual buildings as well as an improvement on the urban planning level under energetic and social aspects. EnergieAgentur.NRW in the Ministry for Economic Affairs, SMEs and Energy coordinates the project and looks after all those involved. In order to ensure the desired quality, an interdisciplinary selection committee assesses the proposals and only awards the status “solar settlement” after a thorough examination.
Requirements for participation
In order to meet the project criteria, two of the three requirements listed below must be met in the new construction area:
- The heating requirement may not exceed 35 kWh / m²a (3-liter house) or 15 kWh / m²a ( passive house ).
- At least 60% of the hot water must be prepared using solar thermal energy ; alternatively, another renewable energy can be used.
- The installed photovoltaic system must have a standard output of at least 1 kW per residential unit.
In addition, special requirements are also placed on the type of building, the economical use of space and the infrastructure such as B. Public transport connections provided. The EnergyAgency.NRW has drawn up planning guidelines for this.
Solar settlements
Solar settlement Erkelenz
The solar settlement in Erkelenz is the first solar settlement in the country with terraced houses in the passive house standard . The specially insulated passive houses get by with a minimum of heating energy, with the low residual heat requirement being covered by a ventilation system in conjunction with an exhaust air heat pump.
Solar settlement Düsseldorf
So far, two solar settlements have been built in the state capital Düsseldorf . A solar settlement is located in the southern Garath district . There, the buildings were realized to a high structural thermal insulation standard, the 3-liter standard. This was achieved, among other things, with an innovative facade insulation material from WLG 24. In addition, ventilation systems with heat recovery ensure energy savings and a pleasant room climate. 40 percent of the hot water requirement is covered by solar thermal systems that are erected on the flat roofs. Photovoltaic systems for power generation with a total of approx. 5 kW standard power complement the energy concept. Each construction phase will have a heating center with gas condensing heating. The second solar settlement is in the immediate vicinity of the Medienhafen Düsseldorf.
Solar settlement Cologne
With four solar settlements, Cologne has the most solar settlements in NRW. The solar settlements are located in Riehl, Mülheim, Deutz and Niehl.
Oberhausen solar estate
The solar settlement in Oberhausen was built from 2007 to 2009 in the city of Oberhausen in the Ruhr area. The main feature of the Oberhausen solar settlement lies in the particularly energy-efficient combination of solar energy, geothermal energy and local heat supply, which is implemented in conjunction with so-called geothermal houses .
The solar settlement is located on the northwestern outskirts of Oberhausen, in the Holten district and in the vicinity of Dinslaken . The development plan for this area was the result of an urban development competition in the 1990s. The first section was realized a few years ago by dfh-Siedlungsbau in cooperation with the competition winner Post & Welters. The current building project represents the second section of the building area and comprises 36 row houses.
The settlement in Oberhausen consists of a row of terraced houses in solid construction, in which every sixth house is designed as a so-called floating house, in order to enable passage to the south-bordering settlement areas on the ground floor. The total of 36 houses are divided into:
- 30 terraced houses with 5 rooms each,
- 5 floating houses each with 3 rooms and
- a bungalow.
All houses are built according to the KFW-60 standards, ie they have a heating requirement of 60 kWh / (m²a). This means that all houses meet the requirements for a low-energy house according to the current Energy Saving Ordinance (EnEV) of October 1, 2009.
Energetic concept
- Geothermal energy
- Only one geothermal heat pump generates the heat for all underfloor heating and hot water supplies. The geothermal energy is obtained by 30 geothermal probes with a total length of approx. 2.9 km. The energy requirement of the heat pump can be completely covered by the solar energy generated.
- solar power
- The large photovoltaic system with 94 kW standard output has a total voltaic area of approx. 560 m², which is spread over almost all the roofs of the settlement. On the one hand, the electricity produced feeds the heat pump and is fed into the public grid as surplus and remunerated.
- Water heating
- The rainwater from the roofs is collected in cisterns and then made available for flushing toilets, washing machines, for watering the garden, etc. There are a total of seven cisterns with a capacity of around 75,000 m³.
The savings in heating and water costs and the surplus generated by the photovoltaic system can offset additional ancillary costs for drinking water, roadside costs, home insurance, etc. This means that the ancillary costs for owners of the estate are practically zero. The energy supply of the solar settlement is largely CO 2 -neutral , with the exception of personal electricity consumption .
Solar settlement Steinfurt
The solar settlement in Steinfurt- Borghorst is the first solar settlement in North Rhine-Westphalia that was created as part of the 50 solar settlements in North Rhine-Westphalia program. Construction began in early 1998 and was completed in early summer 2000.